gcc/testsuite/gcc.dg/pr81292-1.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O2 -fdump-tree-strlen" } */
   3
   4 #include "strlenopt.h"
   5
   6 char a[10];
   7
   8 int __attribute__ ((noinline, noclone))
   9 f1 (int n)
  10 {
  11   a[0] = '1';
  12   a[1] = '2';
  13   return strlen (a + 1) < n ? strlen (a) : 100;
  14 }
  15
  16 int __attribute__ ((noinline, noclone))
  17 f2 (char *a, int n)
  18 {
  19   a[0] = '1';
  20   a[1] = '2';
  21   return strlen (a + 1) < n ? strlen (a) : 100;
  22 }
  23
  24 int
  25 main (void)
  26 {
  27   char b[10];
  28   strcpy (a + 2, "345");
  29   strcpy (b + 2, "34567");
  30   if (f1 (100) != 5 || f2 (b, 100) != 7)
  31     __builtin_abort ();
  32   return 0;
  33 }
  34
  35 /* { dg-final { scan-tree-dump-times "strlen \\(" 2 "strlen" } } */